﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Drawing;

/// <summary>
///PS 的摘要说明
/// </summary>
public class PS
{
	public PS()
	{
    }
		public Bitmap fun1(int Height,int Width,Bitmap oldBitmap)//底片效果
        {
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                //int Height = this.pbxShowImage.Image.Height;
               // int Width = this.pbxShowImage.Image.Width;
               
                //Bitmap oldbitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel;
                for (int x = 1; x < Width; x++)
                {
                    for (int y = 1; y < Height; y++)
                    {
                        int r, g, b;
                        pixel = oldBitmap.GetPixel(x, y);
                        r = 255 - pixel.R;
                        g = 255 - pixel.G;
                        b = 255 - pixel.B;
                        newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b));
                    }
                }
                //this.pbxShowImage.Image = newbitmap;
            }
            catch (Exception ex)
            {
                throw ex;
                //MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            return newBitmap;
        }
        public Bitmap fun2(int Height, int Width, Bitmap oldBitmap) //浮雕效果
        {
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                //int Height = this.pbxShowImage.Image.Height;
                //int Width = this.pbxShowImage.Image.Width;
                
                //Bitmap oldBitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel1, pixel2;
                for (int x = 0; x < Width - 1; x++)
                {
                    for (int y = 0; y < Height - 1; y++)
                    {
                        int r = 0, g = 0, b = 0;
                        pixel1 = oldBitmap.GetPixel(x, y);
                        pixel2 = oldBitmap.GetPixel(x + 1, y + 1);
                        r = Math.Abs(pixel1.R - pixel2.R + 128);
                        g = Math.Abs(pixel1.G - pixel2.G + 128);
                        b = Math.Abs(pixel1.B - pixel2.B + 128);
                        if (r > 255)
                            r = 255;
                        if (r < 0)
                            r = 0;
                        if (g > 255)
                            g = 255;
                        if (g < 0)
                            g = 0;
                        if (b > 255)
                            b = 255;
                        if (b < 0)
                            b = 0;
                        newBitmap.SetPixel(x, y, Color.FromArgb(r, g, b));
                    }
                }
                //this.pbxShowImage.Image = newBitmap;
            }
            catch (Exception ex)
            {
                throw ex;
                //MessageBox.Show(ex.Message, "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            return newBitmap;
        }
        public Bitmap fun3(int Height, int Width, Bitmap oldBitmap)//黑白效果
        {
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                //int Height = this.pbxShowImage.Image.Height;
                //int Width = this.pbxShowImage.Image.Width;
                
                //Bitmap oldBitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel;
                for (int x = 0; x < Width; x++)
                    for (int y = 0; y < Height; y++)
                    {
                        pixel = oldBitmap.GetPixel(x, y);
                        int r, g, b, Result = 0;
                        r = pixel.R;
                        g = pixel.G;
                        b = pixel.B;
                        //实例程序以加权平均值法产生黑白图像
                        int iType = 2;
                        switch (iType)
                        {
                            case 0://平均值法
                                Result = ((r + g + b) / 3);
                                break;
                            case 1://最大值法
                                Result = r > g ? r : g;
                                Result = Result > b ? Result : b;
                                break;
                            case 2://加权平均值法
                                Result = ((int)(0.7 * r) + (int)(0.2 * g) + (int)(0.1 * b));
                                break;
                        }
                        newBitmap.SetPixel(x, y, Color.FromArgb(Result, Result, Result));
                    }
               // this.pbxShowImage.Image = newBitmap;
            }
            catch (Exception ex)
            {
                throw ex;
               // MessageBox.Show(ex.Message, "信息提示");
            }
            return newBitmap;
        }
        public Bitmap fun4(int Height, int Width, Bitmap oldBitmap)//柔化效果
        {
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                //int Height = this.pbxShowImage.Image.Height;
                //int Width = this.pbxShowImage.Image.Width;
                
                //Bitmap MyBitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel;
                //高斯模板
                int[] Gauss = { 1, 2, 1, 2, 4, 2, 1, 2, 1 };
                for (int x = 1; x < Width - 1; x++)
                    for (int y = 1; y < Height - 1; y++)
                    {
                        int r = 0, g = 0, b = 0;
                        int Index = 0;
                        for (int col = -1; col <= 1; col++)
                            for (int row = -1; row <= 1; row++)
                            {
                                pixel = oldBitmap.GetPixel(x + row, y + col);
                                r += pixel.R * Gauss[Index];
                                g += pixel.G * Gauss[Index];
                                b += pixel.B * Gauss[Index];
                                Index++;
                            }
                        r /= 16;
                        g /= 16;
                        b /= 16;
                        //处理颜色值溢出
                        r = r > 255 ? 255 : r;
                        r = r < 0 ? 0 : r;
                        g = g > 255 ? 255 : g;
                        g = g < 0 ? 0 : g;
                        b = b > 255 ? 255 : b;
                        b = b < 0 ? 0 : b;
                        newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b));
                    }
                //this.pbxShowImage.Image = bitmap;
            }
            catch (Exception ex)
            {
                throw ex;
                //MessageBox.Show(ex.Message, "信息提示");
            }
            return newBitmap;
        }
        public Bitmap fun5(int Height, int Width, Bitmap oldBitmap)//锐化效果
        {
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                // Height = this.pbxShowImage.Image.Height;
                //int Width = this.pbxShowImage.Image.Width;
                
                //Bitmap oldBitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel;
                //拉普拉斯模板
                int[] Laplacian = { -1, -1, -1, -1, 9, -1, -1, -1, -1 };
                for (int x = 1; x < Width - 1; x++)
                    for (int y = 1; y < Height - 1; y++)
                    {
                        int r = 0, g = 0, b = 0;
                        int Index = 0;
                        for (int col = -1; col <= 1; col++)
                            for (int row = -1; row <= 1; row++)
                            {
                                pixel = oldBitmap.GetPixel(x + row, y + col); r += pixel.R * Laplacian[Index];
                                g += pixel.G * Laplacian[Index];
                                b += pixel.B * Laplacian[Index];
                                Index++;
                            }
                        //处理颜色值溢出
                        r = r > 255 ? 255 : r;
                        r = r < 0 ? 0 : r;
                        g = g > 255 ? 255 : g;
                        g = g < 0 ? 0 : g;
                        b = b > 255 ? 255 : b;
                        b = b < 0 ? 0 : b;
                        newBitmap.SetPixel(x - 1, y - 1, Color.FromArgb(r, g, b));
                    }
                //this.pbxShowImage.Image = newBitmap;
            }
            catch (Exception ex)
            {
                throw ex;
                //MessageBox.Show(ex.Message, "信息提示");
            }
            return newBitmap;
        }
        public Bitmap fun6(int Height, int Width, Bitmap oldBitmap)
        {
            //以雾化效果显示图像
            Bitmap newBitmap = new Bitmap(Width, Height);
            try
            {
                //int Height = this.pbxShowImage.Image.Height;
                ///int Width = this.pbxShowImage.Image.Width;

                //Bitmap oldBitmap = (Bitmap)this.pbxShowImage.Image;
                Color pixel;
                for (int x = 1; x < Width - 1; x++)
                    for (int y = 1; y < Height - 1; y++)
                    {
                        System.Random MyRandom = new Random();
                        int k = MyRandom.Next(123456);
                        //像素块大小
                        int dx = x + k % 19;
                        int dy = y + k % 19;
                        if (dx >= Width)
                            dx = Width - 1;
                        if (dy >= Height)
                            dy = Height - 1;
                        pixel = oldBitmap.GetPixel(dx, dy);
                        newBitmap.SetPixel(x, y, pixel);
                    }
                //this.pbxShowImage.Image = newBitmap;
            }
            catch (Exception ex)
            {
                throw ex;
                // MessageBox.Show(ex.Message, "信息提示");
            }
            return newBitmap;
        }
}